package com.doit.day02;

import java.util.ArrayList;

public class Test111 {
    public static void main(String[] args) {
        Fu zi = new Zi();
        Fu fu = new Fu();

        ArrayList<Fu> fus = new ArrayList<>();
        fus.add(new Fu());
        fus.add(new Fu());
        fus.add(new Fu());
        fus.add(new Fu());

/*        ArrayList<Fu> zis = new ArrayList<Zi>();
        zis.add(new Zi());
        zis.add(new Zi());
        zis.add(new Zi());
        zis.add(new Zi());
        zis.add(new Zi());*/



    }
}

class Zi extends Fu{

}

class Fu{

}
